Emission
s Control s
Exhaus t Emission s Control s
Th e exhaus t emission s control s
includ e fou r systems : PGM-FI ,
Ignitio n Timin g Control , Secondar y
Ai r Injectio n Syste m an d Thre e Wa y
Catalyti c Converter . Thes e fou r
system s wor k togethe r t o contro l th e
engine' s combustio n an d minimiz e
th e amoun t o f HC , CO , an d NO x tha t
come s ou t th e tailpipe . Th e exhaus t
emission s contro l system s ar e
separat e fro m th e crankcas e an d
evaporativ e emission s contro l
systems .
PGM-FI System
Th e PGM-F I Syste m use s sequentia l
multipor t fue l injection .
I t ha s thre e subsystems : Ai r Intake ,
Engin e Control , an d Fue l Control .
Th e Engin e Contro l Modul e (ECM )
use s variou s sensor s t o determin e
ho w muc h ai r i s goin g int o th e
engine . I t the n control s ho w muc h
fue l t o injec t unde r al l operating -
conditions .
Ignition Timing Control System
Thi s syste m constantl y adjust s th e
ignitio n timing , reducin g th e amoun t
o f HC , C O an d NO x produced .
Secondary Air Injection System
Durin g engin e warm-up , ai r i s
pumpe d int o th e exhaus t t o reduc e
emission s whe n th e engin e is cold .
Three Way Catalytic Converter
Th e thre e wa y catalyti c converte r i s
i n th e exhaus t system . Throug h
chemica l reactions , i t convert s HC ,
CO , an d NO x i n th e engine' s exhaus t
t
o
carbon dioxide (CO2), dinitrogen
(N
2)
,
and water vapor.
Replacemen t Part s
Th e emission s contro l system s ar e
designe d an d certifie d to wor k to -
gethe r i n reducin g emission s t o
level s tha t compl y wit h th e Clea n Ai r
Act . T o mak e sur e th e emission s
remai n low , yo u shoul d us e onl y ne w
Genuin e Hond a replacemen t part s o r
thei r equivalen t fo r repairs . Usin g
lowe r qualit y part s ma y increas e th e
emission s fro m you r car .
Th e emission s contro l system s ar e
covere d b y warrantie s separat e fro m
th e res t o f you r car . Rea d you r
warrant y manua l fo r mor e informa -
tion .
Technica l Informatio n
